Performing a first time calibration of the roll and pitch measurements of a door mounted sensor
If you want your sensor to measure the pitch and roll of the trawl doors, you must calibrate it. You can calibrate a sensor in the relevant Configurator dialog box.
Prerequisites
Calibration must be done with the sensor mounted in its installation adapter on the trawl door(s).
Context
When a sensor is mounted on a trawl door, the pitch and roll measurements may need to be calibrated. If you do not calibrate your sensors you will not know if the pitch and roll readings are correct. If existing sensors have been replaced, or new sensors have been installed, a new calibration is required if the trawl door installation offset values are not available.
Procedure
1 Place the sensor in the door adapter.
On the port door, the “down element shall face down”. On the starboard door, the “side” element shall face down.
2 Place the door on a stable surface.
Use a level and set the door in correct upright position to create a 0 degrees pitch and 0 degrees roll reference.
3 Open the Setup menu.
4 On the Setup menu, select Installation.
Image
Observe that the Installation dialog box opens.
5 At the bottom of the Sensor list page, select Add New Sensor.
The Add New Sensor dialog box opens.
6 Select Yes.
7 In the very first PX Sensor Configurator dialog box, select communication port and sensor type, then select Connect.
The relevant sensor Configurator dialog box opens.
8 Select Calibrate Sensor to open the dialog box.
9 Provided that the door is in its leveled position, select Leveled.
10 Tilt the door at least 20 degrees inwards in the roll direction and make sure the physical door pitch does not change.
11 Once the door is stable in the tilted position, select Tilted.
12 Select Set to accept the values.
Result
The selected door sensor is calibrated for the pitch and roll measurements.